The heavens above: a popular handbook of astronomy (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908 · New York, Chicago, Potter, Ainsworth, & Co. · leaf 409
Fig. 444. smaller ones, requiring a nine-inch telescope to be well seen,Besides these, the whole nebula is dotted with stars. ASTRONOMY. 383 In the winter of 1864-65 the spectrum of this nebulawas examined independently by Secchi and Huggins, whofound that it consisted of three bright lines, and…
Astronomy
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